12181254 has 8 divisors (see below), whose sum is σ = 24362520. Its totient is φ = 4060416.

The previous prime is 12181249. The next prime is 12181259. The reversal of 12181254 is 45218121.

It is an interprime number because it is at equal distance from previous prime (12181249) and next prime (12181259).

It is a sphenic number, since it is the product of 3 distinct primes.

12181254 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015099 + ... + 1015110.

It is an arithmetic number, because the mean of its divisors is an integer number (3045315).

Almost surely, 2^12181254 is an apocalyptic number.

12181254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12181254 is a wasteful number, since it uses less digits than its factorization.

12181254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030214.

The product of its digits is 640, while the sum is 24.

The square root of 12181254 is about 3490.1653255971. The cubic root of 12181254 is about 230.0897822136.

Adding to 12181254 its reverse (45218121), we get a palindrome (57399375).

The spelling of 12181254 in words is "twelve million, one hundred eighty-one thousand, two hundred fifty-four".